fix: cancel Journal Entry on cancellation of asset value adjustment

(cherry picked from commit 4b7f1f2d67)

erpnext/assets/doctype/asset_value_adjustment/asset_value_adjustment.py

@@ -56,6 +56,7 @@ class AssetValueAdjustment(Document):
 		)
 
 	def on_cancel(self):
+		frappe.get_doc("Journal Entry", self.journal_entry).cancel()
 		self.update_asset(self.current_asset_value)
 		add_asset_activity(
 			self.asset,